Kothari, C. (1990). Research methodology: Methods and techniques (2nd.). Wiley eastern limited New Age International.
استشهاد بنمط شيكاغوKothari, C.R. Research Methodology: Methods and Techniques. 2nd. New Delhi: Wiley eastern limited New Age International, 1990.
MLA استشهادKothari, C.R. Research Methodology: Methods and Techniques. 2nd. Wiley eastern limited New Age International, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.